After Michel's comments on "Folio-enabling the page cache", I thought it best to split out the memcg patches from the rest of the page cache folio patches and redo them to focus on correctness (ie always passing a folio). This is fundamentally for review rather than application. I've rebased on Linus' current tree, which includes the recent patchbomb from akpm. That upstream version won't boot on any system I have available, and I'm not comfortable asking for patches to be applied unless I can actually try them. That said, these patches were fine on top of 5.13. There are still a few functions which take pages, but they rely on other conversions happening first, which in turn rely on this set of patches, so I think this is a good place to stop, with the understanding that there will be more patches later. Some of the commit logs may be garbled ... I haven't fully taken into account all of Muchun's recent rework. All of this work is visible in context in a git tree here: https://git.infradead.org/users/willy/pagecache.git/shortlog/refs/heads/folio Matthew Wilcox (Oracle) (18): mm: Add folio_nid() mm/memcg: Remove 'page' parameter to mem_cgroup_charge_statistics() mm/memcg: Use the node id in mem_cgroup_update_tree() mm/memcg: Remove soft_limit_tree_node() mm/memcg: Convert memcg_check_events to take a node ID mm/memcg: Add folio_memcg() and related functions mm/memcg: Convert commit_charge() to take a folio mm/memcg: Convert mem_cgroup_charge() to take a folio mm/memcg: Convert uncharge_page() to uncharge_folio() mm/memcg: Convert mem_cgroup_uncharge() to take a folio mm/memcg: Convert mem_cgroup_migrate() to take folios mm/memcg: Convert mem_cgroup_track_foreign_dirty_slowpath() to folio mm/memcg: Add folio_memcg_lock() and folio_memcg_unlock() mm/memcg: Convert mem_cgroup_move_account() to use a folio mm/memcg: Add mem_cgroup_folio_lruvec() mm/memcg: Add folio_lruvec_lock() and similar functions mm/memcg: Add folio_lruvec_relock_irq() and folio_lruvec_relock_irqsave() mm/workingset: Convert workingset_activation to take a folio include/linux/memcontrol.h | 249 +++++++++++++++---------- include/linux/mm.h | 5 + include/linux/swap.h | 2 +- include/trace/events/writeback.h | 8 +- kernel/events/uprobes.c | 3 +- mm/compaction.c | 2 +- mm/filemap.c | 8 +- mm/huge_memory.c | 2 +- mm/khugepaged.c | 8 +- mm/ksm.c | 3 +- mm/memcontrol.c | 311 +++++++++++++++---------------- mm/memory-failure.c | 2 +- mm/memory.c | 9 +- mm/memremap.c | 2 +- mm/migrate.c | 6 +- mm/page_alloc.c | 2 +- mm/shmem.c | 7 +- mm/swap.c | 4 +- mm/userfaultfd.c | 2 +- mm/vmscan.c | 2 +- mm/workingset.c | 10 +- 21 files changed, 355 insertions(+), 292 deletions(-) -- 2.30.2
